<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
	</head>
	<body>
		<div id="text">

		</div>
		<script src="js/jquery-3.4.1.js" type="text/javascript" charset="utf-8"></script>
		<script type="text/javascript">
			// Math.random();
			var num1 = Math.ceil(Math.random() * 255);
			document.write("<br>随机数" + num1);
		</script>
	</body>
</html>
